CVE-2024-26816
Description
In the Linux kernel, the following vulnerability has been resolved: x86, relocs: Ignore relocations in .notes section When building with CONFIG_XEN_PV=y, .text symbols are emitted into the .notes section so that Xen can find the "startup_xen" entry point. This information is used prior to booting the kernel, so relocations are not useful. In fact, performing relocations against the .notes section means that the KASLR base is exposed since /sys/kernel/notes is world-readable. To avoid leaking the KASLR base without breaking unprivileged tools that are expecting to read /sys/kernel/notes, skip performing relocations in the .notes section. The values readable in .notes are then identical to those found in System.map.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 6.1.85-1 |
| debian | bullseye | fixed | 5.10.216-1 |
| debian | forky | fixed | 6.7.12-1 |
| debian | sid | fixed | 6.7.12-1 |
| debian | trixie | fixed | 6.7.12-1 |
| debian | 10.0 | affected | |
| linux-kernel | affected | 4.19.311 |
References
- https://git.kernel.org/stable/c/13edb509abc91c72152a11baaf0e7c060a312e03
- https://git.kernel.org/stable/c/47635b112a64b7b208224962471e7e42f110e723
- https://git.kernel.org/stable/c/52018aa146e3cf76569a9b1e6e49a2b7c8d4a088
- https://git.kernel.org/stable/c/5cb59db49c9c0fccfd33b2209af4f7ae3c6ddf40
- https://git.kernel.org/stable/c/a4e7ff1a74274e59a2de9bb57236542aa990d20a
- https://git.kernel.org/stable/c/aaa8736370db1a78f0e8434344a484f9fd20be3b
- https://git.kernel.org/stable/c/ae7079238f6faf1b94accfccf334e98b46a0c0aa
- https://git.kernel.org/stable/c/af2a9f98d884205145fd155304a6955822ccca1c
- https://git.kernel.org/stable/c/c7cff9780297d55d97ad068b68b703cfe53ef9af
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://www.suse.com/security/cve/CVE-2024-26816.html
- https://security-tracker.debian.org/tracker/CVE-2024-26816
CWEs
CWE-770
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.